Vertical temperature gradient effect analysis of steel-concrete composite deck system on steel truss stiffening girder with health monitoring

Da Wang, Yong Jian Zhang, Yang Liu, Yongming Liu

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

In order to realize the precise analysis of temperature effect of steel-concrete composite deck system on steel truss stiffening girder, a 3-D finite element method for temperature gradient effect was adopted to verify the feasibility of the method through case study. Based on current codes, a simplified calculation model for vertical temperature gradient was proposed. A long-span suspension bridge with steel truss stiffening girder was taken as the studying case to analyze the temperature data through health monitoring, and a vertical temperature gradient model was established. Combining finite element program and temperature gradient model, 3-D vertical temperature gradient effect analysis was carried out. The results indicate that finite element method with high precision fits for the temperature effect analysis of multiply redundant structure. The explored vertical temperature gradient calculation model is verified to be precise and practical. Vertical temperature gradient effect on steel-concrete composite bridge deck system is great, and the induced stress can not be ignored. The relationship between vertical temperature gradient and induced stress is linear, and the linear coefficients of stress with the same structure are fixed.

Original languageEnglish (US)
Pages (from-to)29-36
Number of pages8
JournalZhongguo Gonglu Xuebao/China Journal of Highway and Transport
Volume28
Issue number11
StatePublished - Nov 1 2015

Keywords

  • Bridge engineering
  • Finite element method
  • Steel-concrete composite deck system
  • Stress
  • Temperature gradient

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Transportation
  • Mechanical Engineering

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